21531706

素因数分解:

$2^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{197}}^1\times {\mathrm{211}}^1$

素因数の和:454

約数の個数: 32

約数和(自身を含む): 38282112

約数和(自身を除く): 16750406

約数列:

[1, 2, 7, 14, 37, 74, 197, 211, 259, 394, 422, 518, 1379, 1477, 2758, 2954, 7289, 7807, 14578, 15614, 41567, 51023, 54649, 83134, 102046, 109298, 290969, 581938, 1537979, 3075958, 10765853, 21531706]

約数ペア:

[(1, 21531706), (2, 10765853), (7, 3075958), (14, 1537979), (37, 581938), (74, 290969), (197, 109298), (211, 102046), (259, 83134), (394, 54649), (422, 51023), (518, 41567), (1379, 15614), (1477, 14578), (2758, 7807), (2954, 7289)]